package com.itheima.reggin.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggin.common.R;
import com.itheima.reggin.dto.DishDto;
import com.itheima.reggin.entity.Category;
import com.itheima.reggin.entity.Dish;
import com.itheima.reggin.entity.DishFlavor;
import com.itheima.reggin.service.CategoryService;
import com.itheima.reggin.service.DishFlavorService;
import com.itheima.reggin.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private DishFlavorService dishFlavorService;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("菜品新增成功");
    }

    @GetMapping("/page")
    public R<Page> pageR(int page, int pageSize, String name) {
        //分页构造器
        Page<Dish> dishPage = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(dishPage, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(dishPage, dishDtoPage, "records");
        List<Dish> records = dishPage.getRecords();
        List<DishDto> list = records.stream().map(item -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    /**
     * 对菜品批量或者单个 进行停售或者起售
     *
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable("status") Integer status, @RequestParam List<Long> ids) {
        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(ids != null, Dish::getId, ids);
        //根据数据进行批量查询
        List<Dish> list = dishService.list(queryWrapper);

        for (Dish dish : list) {
            if (dish != null) {
                dish.setStatus(status);
                dishService.updateById(dish);
            }
        }
        return R.success("售卖状态修改成功");
    }

    /**
     * 批量删除单个或者多个
     *
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam("ids") List<Long> ids) {
        //删除菜品 这里的删除是逻辑删除
        dishService.deleteWithFlavor(ids);
        //删除菜品对应的口味 也是逻辑删除
        LambdaQueryWrapper<DishFlavor> queryWrapper1 = new LambdaQueryWrapper<>();
        queryWrapper1.in(DishFlavor::getDishId, ids);
        dishFlavorService.remove(queryWrapper1);
        return R.success("菜品删除成功");
    }

    /**
     * 移动端查询菜品信息
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）产品
        queryWrapper.eq(Dish::getStatus, 1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);
        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            //SQL:select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }

}
